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TM 9-4110-257-14
b.
Installation.
(1)
Loosen screw (1) and remove cover (2) from new dual pressure control switch (5).
(2)
Install grommet (13) into bottom of dual pressure control switch (5).
(3)
Install dual pressure control switch (5) and two screws (12).
(4)
Using tags on old dual pressure control switch (5) for reference, neatly route new capillary tubing to tees and
carefully coil excess tubing as necessary.
(5)
Aline each capillary tube (10) and tighten two flare nuts (11).
(6)
Install clamp (8) around each capillary tube (10). Install new lock washer (7) and bolt (6).
(7)
Secure each capillary tube (10) with tie down strap (9) as shown.
(8)
Push wire leads (3) into dual pressure control switch (5). Using tags and wiring diagram (fig. 2-4), install wire
leads and two screws (4). Remove tags.
(9)
Install cover (2) and tighten screw (1).
(10)
Adjust HIGH PRESSURE CUTOUT to 305, low pressure CUT IN to 0, and low pressure CUTOUT to 15 IN.
VAC.
NOTE
FOLLOW-ON MAINTENANCE:
Close left side condenser door.
Replace dehydrator (para 5-14).
Leak check (para 5-10), evacuate (para 5-11), and charge (para 5-12) the refrigeration system.
5-75
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